[#llvm-LegalizerHelper-moreElementsVectorDst]
= xref:llvm.adoc[llvm]::xref:llvm/LegalizerHelper.adoc[LegalizerHelper]::moreElementsVectorDst
:relfileprefix: ../../
:mrdocs:

Produce a wider‐vector def and extract the original elements in place.

== Synopsis

Declared in `<llvm/CodeGen/GlobalISel/LegalizerHelper.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
moreElementsVectorDst(
    xref:llvm/MachineInstr.adoc[MachineInstr]& MI,
    xref:llvm/LLT.adoc[LLT] MoreTy,
    unsigned int OpIdx);
----

== Description

Legalize a single operand `OpIdx` of the machine instruction `MI` as a Def by performing it with additional vector elements and extracting the result elements, and replacing the vreg of the operand in place.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *MI*
| Instruction whose def operand gains more elements.
| *MoreTy*
| Vector type with additional elements.
| *OpIdx*
| Operand index to legalize as a def.
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#